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Sales of Railway Lines (Details) - USD ($) $ in Millions			9 Months Ended		40 Months Ended
	Sep. 06, 2024	Sep. 05, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2027
Property, Plant and Equipment [Line Items]
Cash proceeds from sale of railway line			$ 527	$ 62
Gain on sale of railway line			$ 425	$ 34
Railway Line | VPRA
Property, Plant and Equipment [Line Items]
Cash proceeds from sale of railway line		$ 315
Gain on sale of railway line		$ 323
Railway Line | VPRA | Forecast
Property, Plant and Equipment [Line Items]
Cash proceeds from sale of railway line					$ 357
Railway Line | City of Charlotte
Property, Plant and Equipment [Line Items]
Cash proceeds from sale of railway line	$ 74
Gain on sale of railway line	$ 57

X

- Definition

Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 12
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 7A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A

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